Crypto fees cover transaction costs. Key types are:
1. **Network/Gas Fees:** Paid to blockchain miners/validators to process transactions. Costs fluctuate based on network congestion and transaction complexity (e.g., Bitcoin, Ethereum gas).
2. **Trading Fees:** Charged by exchanges (centralized or decentralized) when you buy/sell crypto. "Maker" fees (adding orders) are usually cheaper than "Taker" fees (taking orders instantly).
3. **Withdrawal/Deposit Fees:** Exchanges may charge to move crypto off-platform (withdrawal) or bring funds on (deposit, less common for crypto).
Fees depend on network demand, exchange choice, order type, and asset. Reduce costs by using limit orders, trading off-peak, choosing efficient exchanges/Layer-2 solutions, and consolidating transfers.